Exhaust air accelerate in the kitchen

With strong steam development when frying and cooking I had in the past sometimes, depending on the food, for a long time something like this. Because unfortunately I do not have an extractor hood, but a window. Only the haze / smoke does not escape so quickly, which can partly be due to the thermals in the outdoor area.

To the exhaust To accelerate, I came up with the idea some time to put my table fan upside down in the window and put on the highest level and lo and behold, the room air, so the smoke or the kitchen art was attracted to the fan and quickly transported outside.